Coefficient estimate

Standard error

T value

P value

SPAR

0.2854

0.0032

15.47

2.4e-021

$\alpha$

0.3134

0.0021

55.37

3.4e-104

$\beta$

0.5986

0.0011

83.19

0.00000

${\gamma }_1$

0.0542

0.0035

9.96

3.7e-013

${\gamma }_2$

0.4127

0.0037

5.87

1.2e-09

${\gamma }_3$

−0.0759

0.0022

-49.55

2.2e-092